+-------COMP:N-N(of)-------+   
            +-------COMP:V-N(In)-------+          |           +-MOD_ATT:N-ADJ+   
      +MOD_A+         +MOD_ATT+SUBJ:V-N+--OBJ:V-N-+           |       +MOD_AT+   
      |     |         |       |        |          |           |       |      |   
 In HepG2 cells , __NODE__ protein increases expression of __SP__ __NODE__ mRNA .
MOD_ATT:N-N (cell,HepG2)
MOD_ATT:N-ADJ (protein,__NODE__)
COMP:V-N(In) (increase,cell)
SUBJ:V-N (increase,protein)
OBJ:V-N (increase,expression)
COMP:N-N(of) (expression,mRNA)
MOD_ATT:N-ADJ (mRNA,__SP__)
MOD_ATT:N-ADJ (mRNA,__NODE__)